Reminders:
1. Today, June 6, is the last day to pre-register for the 2011
   CEDAR-GEM Joint Workshop at http://www.cpe.vt.edu/gem/registration.html.
2. Published announcements for CEDAR-GEM sessions can be found at: 
   http://www-ssc.igpp.ucla.edu/gemwiki/index.php/2011_CEDAR-GEM_Joint_Workshop


                     ***************************
                     **   THE GEM MESSENGER   **
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                                                  Volume 21, Number 10
                                                          June 6, 2011
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Call for Participation at 2011 CEDAR-GEM Joint Workshop: 
Plasmasphere-Magnetosphere Interactions (PMI) Focus Group
 Session I:   (Mon 27 Jun,  4 -  6 pm)
 Session II:  (Tue 28 Jun, 10 - 12 am)
 Session III: "M-I Coupling within Plasmasphere Boundary Layer"
               JOINT WITH CEDAR.  (Tue 28 Jun, 1:30-3:30p)
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From: Jerry Goldstein <jgoldstein AT swri.edu>
      Maria Spasojevic <mariaspasojevic AT stanford.edu>
      Joe Borovksy <jborovsky AT lanl.gov>
      Phil Erickson <pje AT haystack.mit.edu>

GENERAL CALL:
The PMI focus group would like to invite presentation and 
participation in three sessions at this year's GEM/CEDAR joint 
workshop.  The three sessions take place on Monday and Tuesday, as 
listed above.  Session III is devoted especially to joint GEM/CEDAR 
topics.  We also invite active participation and presentations of new 
results by members of the LSW FST on the Plasmasphere.  Please e-mail 
us for a speaking slot as soon as possible; the workshop is only a few 
weeks away!

PMI MODELING CHALLENGE:
We need to dedicate some time for brainstorming and planning of a PMI 
Modeling Challenge.  Please come prepared to discuss your ideas for 
the challenge.  What events should we select for modeling?  What 
should be the guidelines for input and the metrics for success?


SCIENCE TOPICS:

1) Modeling plasmaspheric density:  formation, evolution, morphology.  
Observations in support of models, and model-data comparisons.  What 
are the radial, MLT, and field-aligned structures?  What evidence is 
there for interhemispheric asymmetries?

2) The inner magnetospheric electric field:  global modeling, 
observations, and impact.

3) Plasmaspheric plume density distribution.  How well do 
plasmaspheric drainage plumes map to ionospheric SED plumes moving 
westward?  What is the altitude and temporal signature as we move from 
low to mid to high latitudes?  What creates the "lumpy" structure 
within plumes, and how does this structure evolve?  Is the plasma 
inside late-storm plumes from the magnetosphere, or outflow from a 
hot-ionosphere high-latitude source?  Where are the gaps in 
understanding?

4) PBL electric field variability.  What is the altitude dependence of 
the variability and what implications does this have for field-aligned 
currents and the scaling of the magnetic field mapping function / 
electric field structuring?  Do we have enough empirical evidence to 
make a statement and can data-guided models help?

5) Plasmapause location and structure.  How do ionospheric and 
magnetospheric people locate the plasmapause / PBL?  Are these 
compatible?  What forms the structure seen on the PBL inner edge?

6) Wave/particle interactions and macroscale instabilities in the PBL.  
Where are these located (in plasmasphere, in ducts, on plasmapause, 
within plume, ..)?  Where do they have an impact on particle 
trajectories through scattering or anomalous heating?

7) Conductivity control of PBL electrodynamics.  How is the coupled 
electric field on PBL field lines affected by ionospheric conductivity 
in either or both hemispheres?



WANT TO SPEAK?
Requests for speaking slots, ideas, comments, or questions:

Jerry Goldstein <jgoldstein AT swri.edu>,  Maria Spasojevic 
<mariaspasojevic AT stanford.edu>,  Joe Borovksy <jborovsky AT lanl.gov>, 
Phil Erickson <pje AT haystack.mit.edu>


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